A:H2(g)+Cl2(g)=2HCl(g); △H='-183' kJ·mol-1
B:H2(g)+Cl2(g)=2HCl(g); △H=+183kJ·mol-1
C:H2(g)+Cl2(g)=2HCl(g);△H=-91.5kJ·mol-1
D:H2(g)+Cl2(g)=2HCl(g);△H=+91.5kJ·mol-1
12的负的平方根介于( )